Pipe vise



April 9, 1940.

' P. J. BREWINGTON Filed Sept. l, 1938 PIPE VISE means of a. pivot Vconnection Patented Apr. 9, 1940 j UNITED, .STATE rire vIsE j Philip J. BrewingtonySan Antonio, Tex. Application September 1, 1938, Serial No. 228,059

` 5 claims. (ci. :s1-19) This invention `relates to pipe vises, Vand has for one of its objectsthe production of asimple and eicient pipe vise'which is constructed in a manner whereby any size pipe may, be firmlyy held thereby without the necessityof the opera' tor employing a hand adjustment to ac conimo` date the vise to pipes of various sizes.

A further object of this invention is the production of a'pipe vise, the parts'of which may be quickly adjusted by a simple operation to hold pipes of various sizes securely in position.v

Other objects and advantages of the present invention will appear throughout the Vfollowing specification and claims.

In the drawing:

Figure 1 is a side vise;

Figure 2 is a top plan view thereof;- s

Figure 3 is a longitudinal sectional view'taken .on line 3-3 of Figure l;`

Figure 4 is a fragmentarytop plan View of the vise jaws carried by the base of the pipe vise;

Figure 5 is a vertical sectional view taken on line 5-5 of Figure 1.; y

Figure 6 is an enlarged side 4elevation of a portion of the pipe-gripping chain.

By referring to--the drawing, it lwill be seen that I0 designates the base of the vise which is provided with an upstanding lugv I-I near one end to which lug is pivotally secured a frame I2 by I3 constituting a elevational View of the pipe hinge, as shown in Figure 1. substantially an inverted U'shaped structure, one end of which is providedvwith a depending. guiding neck I4', which neck I4 is in turny provided with a longitudinally extending channelv I5 which is substantially T-shaped in cr`oss`V section. v

A chain-engaging. bar I6, T-shaped in crosssection, is slidably mounted within the channel I5 of the neck I4, the lower end of the bar I6 extending through the aperture I1v formed in the base I0. A coilspring -I8 is secured to the upper end of the bar I6 and is alsov secured to, the frame I2 to normally pull the bar I6 in an upward direction when pressure is relieved therefrom. A chain I9 is anchored at one'end as at 20, to the base lIIl, and the opposite end is secured to the lower end of the bar I6, as at 2|.

A plurality of pipe-supporting and engaging jaws` 22 are secured to the base I0 intermediate the ends of the chain I9, as shown, and these jaws 22 are provided with V-shaped toothed notches 23y for the purpose' of supporting a pipe 24, as shown. The chain I9l is preferably prolface 2'1,l as shownin Figures land 3.

' shown'in Figure 1.

This frame I2 is "that a very simple vided with teeth25` upon for facilitating thegripping of the pipe 24 as the chain I9 is tightly clamped about the pipe 24.

The base I0 is also provided with an upstanding rack 26 having an inclined toothed forward This upstanding rack 26'isparranged beyond the depending neck `I4,\ as shown in Figure 1, and is adapted tobe engaged by the hook end 28 of the hook arm 29. lThis hook arm 29 is provided with a bifurcated upper end 30 which bifurcated upper end 39 fits upon opposite sides of an eccentric '3l and` is journaled upona journal pin 32.

The eccentric 3I carries an operating handle 33 which projects forwardly, as shown in Figures n l andI 2, and is adapted to force the chain-,carrying 'bar' I6 downwardly as the handle'33 is moved downwardlyffor rotating the eccentric 3I,. thereby drawing the chain I9 tightly around the pipe 24 and locking' the pipe in firmy engagement with the jaws 22. The eccentric 3| is provided with notches 34 upon the sides thereof, vwhich notches v34 are adapted to be engaged by the inwardly extending fingers 35 carried by the bifurcated endf of vthe hook arm 29 as the 'arm 33 is swung upwardly inthe direction of the arrow 34 with the ngers y35 of the hook arm 29 will cause they hook end 28 to be kicked or lifted out of engagement with the toothed forward face 21 of the upstanding rack 26, thereby permitting theframe I2 to be swung upon its pivot I3 upwardly in the direction of the arrow shown in Figure 1. The upward swinging of the handle 33 will cause the eccentric 3I to relieve pressure yfrom `the bar I6 and the coil spring I8 will then: pull the bar I6 lupwardly and release the gripping 4action of the chain' I9. from the pipe 24.

From the foregoing description, it will be seen and efficient pipe vise` has been produced whereby the gripping portionsfor gripvping the pipevwill automatically conform tothe contour of the pipe, such for instance asthe chain, and adapt itself vto various sizes of pipes without the necessity of the operator manipulate ing minute and hand-controlled adjustments.` Simply by placing thev pipe24 upon the jaws 22 and then by swinging the frame I2 over to the positionrshown in Figure l, the hook arm 29 will. automaticallydropl into engagement with the' toothed forward face of the-rack 26. The` handle 33 may be swung then downwardly bringing the eccentric 3l into frictional contact with the upper end of the bar I6 and forcing the samedownwardly against the tension of the spring I8, causthe side faces thereof y The contactA of the notches l ing the toothed chain i9 to rmly grip the pipe 24 holding the pipe 2li in position and also preventing the pipe from turning.

When it is desired to release the chain I9 from the pipe 2li, the handle 33 is swung upwardly, releasing the pressure of the eccentric 3i `from the bar It and the spring i8 will pull the bar I6 upwardly releasing the gripping action of the chain i9 from the pipe 2li. Continued movement of the handle 33 upwardly will cause the notches Sli to be contacted by the fingers 35 and kick the hook arm 2S out of'contact with the toothed face `7:"'5 of the rack 26 whereupon the frame l2 maybe Y swung to a position to uncover `the pipe 24 cornpletely. v A

It should be understood that certain detail changes in the mechanical construction may be" employed without departing from the spirit of the invention, so long` as such'changes fall within f tightly drawing said chainto a clamping pesi-V 2. A pipe vise of the classdescribed comprising a base, a frameV hingedly securedV at one end to said base, said frame being oi a substantially inverted U-shape, a chain connected'atrone end to saidA base, said fra-lne having a' depending neck, a sliding bar mounted upon saidneck and engaging the opposite end of said chain, an eccentric pivotally secured to said frame and engaging said bar for moving the bar to a position for'drawing said chain about an article to be clamped as 4'said eccentric is rotated, and av handle for actuating said eccentric.

`3. A pipe vise of the class described comprising a'base, a :frame` hingedly secured at one end y to said base, saidfrarne beingof a substantially inverted U-shape, a chain connected at one end to said base, said frame having a depending neck, a sliding bar mounted upon said neck and enbase engageable by said hook arm for locking said frame in a closed position.

4. A pipe vise of the class described comprising a base, a frame hingedly secured at one end to said base, said frame being of a substantially inverted U-shape, a chain connected'at one end to said base, said frame having a depending neck, aV sliding lbar mounted upon saidneck and engaging `the opposite end of said chain, an ec-` centric pivotally secured to said frame and engaging said bar for moving the bar to ra position for drawing said chain about an articletc be clamped as said eccentric is rotated, a handle for actuating said eccentric, a hook arm pivotally secured to said frame, a rack carried by said base engageable by said hookarm for locking said frame in' `a closed position, and means carried bythe eccentric and adapted to engagel said hook arm for automatically moving the hook arm to a released position as said' eccentric is moved in one direction.

5; A pipe vise vof the class described comprising a base, a framehingedly secured at one end to said base, said frame being of a substantially inverted U-shape, a chain connected' at one` end to said base, said frame having a depending neck,

, a sliding bar mounted upon` said neck and engaging the opposite end oi said chain, an eccentricpvotally securedto said frame and engaging said bar for moving the bar to a position for drawing said chain about an article to rbe clamped as said eccentric is rotated, a handle for actuating said eccentric, an upstanding rack having an inclined too-thed face, a hook arm pivotally secured to said `frame andadapted to engage said toothed face of said rack for locking the frame in a clamped position, inwardly extendingngers carried by said hook arm near its upper end, and lug means carried by said eccentric for engaging said ngers and being adapted to kick said hook arm to a released position as said eccentric is moved in one direction.

PHILIP J BREWINGTON. 

